You know who else were great heart and soul players?
Michael Voss and Jonathan Brown.
For me, they are celebrated leaders and champions and arguably legends of the game. Always will be legends of the club and close to the heart, they were both captains!
For the sake of the original post, who I think might be pushing for more unheralded heroes, I say Fly McCrae. Not part of the Fab Four, but was there for all 4 GF's and was servicable and made his mark.